Finding the Third Proportional to 170,806 and 271,415.50

Step by Step Solution

1. Step 1: Write the proportion equation
   170,806 : 271,415.50 = 271,415.50 : x
2. Step 2: Convert to fraction form
   170,806/271,415.50 = 271,415.50/x
3. Step 3: Cross multiply
   170,806x = 271,415.50 × 271,415.50
4. Step 4: Simplify right side
   170,806x = 73,666,373,640.25
5. Step 5: Solve for x
   x = 73,666,373,640.25/170,806
6. Step 6: Final answer
   x = 431,286.80